Sleep and diabetes

Not getting enough sleep each night, or getting too much sleep,
may increase a person's risk of developing type 2 diabetes.
Scientists at Yale University studied the impact of sleep duration
on the development of diabetes in more than 1100 middle-aged and
elderly men who were free of diabetes in the 1980s and were
followed until 2004. Men getting no more than six hours of sleep
per night, as well as those getting more than eight hours of shut
eye per night, were at significantly increased risk for developing
diabetes. However, relative risks were reduced "considerably" when
adjusted for testosterone, suggesting to the team that the effects
could be mediated via changes in the body's levels of the hormone.
Published in Diabetes Care, reported by Reuters.